Also note that with MSEO
you do not have tape compression. One of our customers (bank) goes from 6 hours
full backup to 18.
You must have a very powerful
system to run MSEO
From:
veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Bill Roth
Sent: Thursday, June 18, 2009 8:29
PM
To:
veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] MSEO and
normal backups to same media
In addition to the comments Mr. Brown has been kind enough to provide,
I'd like add a note about multiplexing.
See page 84 of the MSEO Admin Guide.
The note is applicable to multiplexing encrypted and
non-encrypted backups together.
On Thu, Jun 18, 2009 at 6:31 AM, <william.d.brown AT gsk DOT com> wrote:
I'm sure it says in the manual that you can mix MSEO and non-MSEO on a
single tape. You may think that is going to create a problem as you'll
have to treat all your media as if it contains encrypted data. I know the
idea of encryption is so you don't lose data when you lose media, but it's
nice to know which tapes are which.
You do have to reduce the SIZE_DATA_BUFFERS to allow for the MSEO headers,
so all backups from that Media Server will have slightly short blocks,
which will affect the throughput just because less data is written in each
block. I don't think we have any comparison figures, as we don't ever
send the same data encrypted and non-encrypted. There wasn't a lot of
choice!
When we get time we are going to look at LTO4 encryption, which I think
will be neater. MSEO is quite easy to accidentally turn off without
noticing.
veritas-bu-bounces AT mailman.eng.auburn DOT edu
wrote on 18/06/2009 11:49:24:
> Guys I'm running (Or will be after upgrading from 5.0mp7) Netbackup
> 6.5.4 Master server with MS Encryption Option installed.
>
> I know i can set the encryption per policy and we have requirement to
> backup 2 machines with encryption and not the rest.
>
> My question is can encrypted and none encrypted images be written to the
> same tape media?
>
> Currently we mpx multiple servers to say a daily or weekly tape pool to
> maximise throughput.
>
> Cheers
>
> P.S Does anyone know a rough factor of time added by using MSEO. e.g is
> it twice as long .6 times as long?
>
>
> _______________________________________________
> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>
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